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Roller Cone Bits(NG3) for Rock Piling Core Barrel

Categories: Foundation Series, Roller Cone Bits

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Description

Technical specification of roller cone bit NG3

Raw Material

Cone

15MnNi4Mo

Arm

15CrNiMo

Tooth

Tungsten Carbide Inserts

Tooth Type

Tooth Qty.&Diameter

49 PCS / 14mm

Tooth Height

Total height: 23mm/21mm/19mm, inside height: 12mm/11mm/11mm, outside height: 11mm/10mm/8mm

Bearing and Lubrication

Tungsten carbide enhanced on bearing

A	Yes
B	Yes
C	No

Grease Lubrication & Bearing Seal

Inject grease by vacuum machine, O-ring Seal

138mm roller cone bit is made by tungsten carbide inserts are full fitting on surface ,it is different from traditional Single cone roller bit that inserts are groove-inserts-groove design.

Steel material of arm and cone is important for the quality, we use 15MnNi4Mo steel for cone, and we use 15CrNiMo steel for arm, it is standard steel material for oil well drilling tricone bit.

Among cone-diameter 133mm roller cone bit in Solidkey, this model is almost the best quality and performance, we have many regular customers from China domestic and South-East Asia, many deep piling holes are requested in foundation projects for tall building and railway construction.